109479728_LGF_DOC_V5_2_1_en.pdf - Entry ID: 109479728 | V5.2.1 | 10/2025

109479728_LGF_LIB_TIAV20_V5_2_1.zip - TIA Portal V20 Library 

The LGF (Library of General Functions) for SIMATIC S7-1200 / S7-1500 is a global library for TIA Portal that provides a curated set of reusable function blocks to simplify PLC programming and enhance automation projects. It extends standard instructions of STEP 7 in TIA Portal with additional capabilities for logic, timing, counting, comparison, mathematical operations, data processing, and technology-related tasks.

These functions:

• Are immediately usable by parameterization
• Can be used universally
• Are not protected and therefore customizable
• Are best documented including interface description

All blocks in the library can be universally used with the following controller:

• SIMATIC S7-1200 and S7-1200F product family (from firmware V4.2)
• SIMATIC S7-1500 and S7-1500F product family (from firmware V2.0)
• Simulation with SIMATIC S7-PLCSIM (as of V14)

Last Change

LGF V5.2.1 - See changelog chapter in the documentation

Features

The LGF library is organized into functional groups:

• Bit Logic Operations – Logical operations on bits and signals.
• Date and Timer Operations – Functions for time-based processes and date handling.
• Counter Operations – Blocks for event counting and cyclic processes.
• Comparator Operations – Value comparison and condition checks.
• Math Operations – Basic and advanced mathematical calculations.
• Data Handling – Tools for managing and processing data structures.
• Converter Operations – Data type conversion and scaling functions.
• Signal Generators – Blocks for generating periodic or custom signals.
• Technology Operations – Specialized functions for technology-specific tasks.
• Measurement Operations – Functions for measurement and evaluation processes.
• Legacy Functions – Compatibility blocks for older projects.